Literal 1:1 performance maybe not, but a Pro model could easily run every PS5 game even more easily if Nintendo wanted. A die shrink of the existing chip alone if it was allowed to upclock could likely run every PS5/XSS game largely fairly comfortably as the existing Switch 2 already is showing it can run PS5 tier games without too much fuss. 

You'll probably see even with an overclock of the existing Switch 2 chipset (if or when that happens), that with overclocking a lot of these games will be able to bump to 40, even 50-60 fps and/or run at a higher resolution (if that's what you want). 

It could run the same games with modifications, as the current model already does in many cases, but Wman asked if it could "functionally match" PS5; even with a die shrink/overclock, the CPU is still gonna make that tricky for games that are heavy in that department.

Than again, maybe there is some crazy person at Ubi, just like in Larian, who makes it their personal goal to make it run - apparently, there's now native Steam Deck build of Baldur's Gate 3...

With how well Star Wars Outlaws holds up, and with games like RE Requiem and Indiana Jones on the way, it'll be fun to see what kind of heavyweights the little hybrid can handle.

Alan Wake 2 maybe, Kingdom Come Deliverance II, Plague Tale Requiem, Hellblade II even... it should prove fascinating given the kind of ports devs were able to pull off on the original Switch with its underclocked 2015 Tegra chipset.

There does seem to be a Steamdeck community that get onboard to make games run more optimally on the steamdeck and maybe Outlaws will get a huge upgrade later on on Steamdeck. I do think RDNA 2 isn't as capable as the Switch 2 GPU in feature set and upscaling. It's close and with FSR4 now available to it, it will be interesting to see what games are better with it. I was disappointed that Outlaws doesn't have a first person view which is my preferred option for playing games so its not really a game on my radar but I've watched the slaughter of the Steamdeck compared to Switch 2 version of this game. The steamdeck version looks so rubbish in comparison. I think its the first title where the Switch 2 is definitely the winner without question. Cyberpunk I find it difficult to be so decisive as I've seen it running on Steamdeck looking really good, very impressive and in some ways better than Switch 2 and other ways inferior but a comparable experience but Outlaws the steamdeck is flat on its back with a bloody nose. It does seem like the Outlaws benefits from the better GPU technology and has surprisingly low CPU requirements, a great fit for Switch 2.

Indiana Jones is, at least in PC tests for Ampere based GPUs, much, much lighter than Outlaws - as in at least 2x lighter - so I think Switch 2 shouldn't have problem running it.

Alan Wake 2 can be heavy, but it doesn't require RT.

KCD II runs on potatoes, due to how well optimized CryEngine is.

Plague Tale should also run fine, since it runs on ancient GPUs just fine (my 4th PC still has old RX 570, my wife's daughter played it on it, she loves both Requiems).

Hellblade would be interesting to see, it's quite heavy and uses software Lumen, which, IIRC, is fairly taxing on CPU.

To be fair, they did this with AC Shadows: https://store.steampowered.com/news/app/3159330?emclan=103582791474831789&emgid=572625355297260282

And as a Steam Deck owner, I can say that was the most impressively beautiful game that I ever played at locked 30fps on the Deck, although I didn't check the BG3 update out (but it ran bad before it).

Thanks, didn't know about AC:Shadows. Maybe they will indeed do something about Outlaws as well.

As for BG3, it seems that those improvements will benefit all other builds as well - as with all fixed hardware, there's progressively more to squeeze out of it...up to a certain point, of course.

Deck is fairly fine piece of kit -  when its running its GPU at max allowed clock, it actually has much higher pixel and texture fill rates, in addition to memory bandwidth, than Switch 2. What it does not have is developers (bar those few examples) who make extra effort just for Deck (let alone complete ports), where Switch 2, naturally, will always have major upper hand.

Decided to try the demo on Steam Deck LCD. 

Basically get 18-24 fps @ Performance FSR 3 and 19-26fps at Ultra Performance FSR 3. I'd say it hits 30fps maybe 5% of the time, when I looked out at the empty desert.

This is what it looks like.

And yes, GPU clock was at its max turbo clock (1600Mhz) with 95-98% utilization.

Also tried it on the Rog Ally Z1E and I can get a very unstable 28-35fps with FSR 3 Performance @ 900p target.

Need to drop down to 720p target or ultra performance with 900p target to get a semi-stable 30fps. 

Everything is on the lowest possible. 

Just for context FSR 3 Ultra Performance @ 800p target is ~266p internally. @900p it is about 300p internally. 

Performance @ 800p is 400p internally. At 900p about 450p internally. 

Switch 2 handheld renders the game internally around 540p, and docked around 720p according to DF. 

Any optimization for Steam Deck, will have to go a pretty long way to compare to SW2. Especially given that Ubisoft already optimizes for AMD GPU's pretty well. 

Yet Deck runs Indiana - what is strange about that it is that, when you compare RTX 3060 and RX 6700, cards that are neck and neck in Outlaws, in Indiana, 3060 is twice as fast as 6700, and easily beats it in most other RT titles. So either Outlaws really likes RDNA2, or it hates Ampere.

It's no secret that Outlaws on Switch 2 goes below PC's low, but to me, all said and done, it seems that it goes fairly below Low and that Ubi did one hell of a job of fine tuning it for Switch 2.